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SunCheng
302
Application/BudgetApplication.cs
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302
Application/BudgetApplication.cs
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using Service.Budget;
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namespace Application;
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/// <summary>
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/// 预算应用服务接口
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/// </summary>
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public interface IBudgetApplication
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{
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/// <summary>
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/// 获取预算列表
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/// </summary>
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Task<List<BudgetResponse>> GetListAsync(DateTime referenceDate);
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/// <summary>
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/// 获取分类统计信息（月度和年度）
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/// </summary>
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Task<BudgetCategoryStatsResponse> GetCategoryStatsAsync(BudgetCategory category, DateTime referenceDate);
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/// <summary>
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/// 获取未被预算覆盖的分类统计信息
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/// </summary>
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Task<List<UncoveredCategoryResponse>> GetUncoveredCategoriesAsync(BudgetCategory category, DateTime? referenceDate = null);
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/// <summary>
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/// 获取归档总结
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/// </summary>
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Task<string?> GetArchiveSummaryAsync(DateTime referenceDate);
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/// <summary>
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/// 获取指定周期的存款预算信息
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/// </summary>
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Task<BudgetResponse?> GetSavingsBudgetAsync(int year, int month, BudgetPeriodType type);
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/// <summary>
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/// 删除预算
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/// </summary>
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Task DeleteByIdAsync(long id);
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/// <summary>
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/// 创建预算
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/// </summary>
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Task<long> CreateAsync(CreateBudgetRequest request);
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/// <summary>
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/// 更新预算
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/// </summary>
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Task UpdateAsync(UpdateBudgetRequest request);
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}
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/// <summary>
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/// 预算应用服务实现
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/// </summary>
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public class BudgetApplication(
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IBudgetService budgetService,
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IBudgetRepository budgetRepository
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) : IBudgetApplication
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{
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public async Task<List<BudgetResponse>> GetListAsync(DateTime referenceDate)
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{
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var results = await budgetService.GetListAsync(referenceDate);
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// 排序: 刚性支出优先 → 按分类 → 按类型 → 按使用率 → 按名称
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return results
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.OrderByDescending(b => b.IsMandatoryExpense)
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.ThenBy(b => b.Category)
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.ThenBy(b => b.Type)
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.ThenByDescending(b => b.Limit > 0 ? b.Current / b.Limit : 0)
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.ThenBy(b => b.Name)
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.Select(MapToResponse)
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.ToList();
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}
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public async Task<BudgetCategoryStatsResponse> GetCategoryStatsAsync(
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BudgetCategory category,
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DateTime referenceDate)
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{
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var result = await budgetService.GetCategoryStatsAsync(category, referenceDate);
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return new BudgetCategoryStatsResponse
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{
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Month = new BudgetStatsDetail
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{
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Limit = result.Month.Limit,
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Current = result.Month.Current,
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Remaining = result.Month.Limit - result.Month.Current,
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UsagePercentage = result.Month.Rate
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},
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Year = new BudgetStatsDetail
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{
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Limit = result.Year.Limit,
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Current = result.Year.Current,
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Remaining = result.Year.Limit - result.Year.Current,
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UsagePercentage = result.Year.Rate
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}
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};
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}
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public async Task<List<UncoveredCategoryResponse>> GetUncoveredCategoriesAsync(
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BudgetCategory category,
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DateTime? referenceDate = null)
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{
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var results = await budgetService.GetUncoveredCategoriesAsync(category, referenceDate);
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return results.Select(r => new UncoveredCategoryResponse
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{
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Category = r.Category,
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Amount = r.TotalAmount,
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Count = r.TransactionCount
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}).ToList();
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}
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public async Task<string?> GetArchiveSummaryAsync(DateTime referenceDate)
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{
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return await budgetService.GetArchiveSummaryAsync(referenceDate.Year, referenceDate.Month);
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}
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public async Task<BudgetResponse?> GetSavingsBudgetAsync(int year, int month, BudgetPeriodType type)
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{
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var result = await budgetService.GetSavingsBudgetAsync(year, month, type);
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return result == null ? null : MapToResponse(result);
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}
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public async Task DeleteByIdAsync(long id)
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{
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var success = await budgetRepository.DeleteAsync(id);
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if (!success)
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{
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throw new BusinessException("删除预算失败，记录不存在");
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}
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}
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public async Task<long> CreateAsync(CreateBudgetRequest request)
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{
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// 业务验证
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await ValidateCreateRequestAsync(request);
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// 不记额预算的金额强制设为0
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var limit = request.NoLimit ? 0 : request.Limit;
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var budget = new BudgetRecord
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{
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Name = request.Name,
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Type = request.Type,
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Limit = limit,
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Category = request.Category,
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SelectedCategories = string.Join(",", request.SelectedCategories),
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StartDate = request.StartDate ?? DateTime.Now,
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NoLimit = request.NoLimit,
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IsMandatoryExpense = request.IsMandatoryExpense
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};
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// 验证分类冲突
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await ValidateBudgetCategoriesAsync(budget);
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var success = await budgetRepository.AddAsync(budget);
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if (!success)
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{
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throw new BusinessException("创建预算失败");
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}
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return budget.Id;
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}
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public async Task UpdateAsync(UpdateBudgetRequest request)
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{
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var budget = await budgetRepository.GetByIdAsync(request.Id);
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if (budget == null)
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{
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throw new NotFoundException("预算不存在");
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}
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// 业务验证
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await ValidateUpdateRequestAsync(request);
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// 不记额预算的金额强制设为0
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var limit = request.NoLimit ? 0 : request.Limit;
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budget.Name = request.Name;
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budget.Type = request.Type;
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budget.Limit = limit;
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budget.Category = request.Category;
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budget.SelectedCategories = string.Join(",", request.SelectedCategories);
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budget.NoLimit = request.NoLimit;
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budget.IsMandatoryExpense = request.IsMandatoryExpense;
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if (request.StartDate.HasValue)
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{
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budget.StartDate = request.StartDate.Value;
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}
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// 验证分类冲突
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await ValidateBudgetCategoriesAsync(budget);
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var success = await budgetRepository.UpdateAsync(budget);
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if (!success)
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{
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throw new BusinessException("更新预算失败");
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}
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}
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#region Private Methods
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/// <summary>
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/// 映射到响应DTO
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/// </summary>
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private static BudgetResponse MapToResponse(BudgetResult result)
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{
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// 解析StartDate字符串为DateTime
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DateTime.TryParse(result.StartDate, out var startDate);
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return new BudgetResponse
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{
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Id = result.Id,
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Name = result.Name,
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Type = result.Type,
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Limit = result.Limit,
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Current = result.Current,
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Category = result.Category,
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SelectedCategories = result.SelectedCategories,
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StartDate = startDate,
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NoLimit = result.NoLimit,
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IsMandatoryExpense = result.IsMandatoryExpense,
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UsagePercentage = result.Limit > 0 ? result.Current / result.Limit * 100 : 0
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};
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}
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/// <summary>
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/// 验证创建请求
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/// </summary>
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private static Task ValidateCreateRequestAsync(CreateBudgetRequest request)
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{
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if (string.IsNullOrWhiteSpace(request.Name))
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{
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throw new ValidationException("预算名称不能为空");
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}
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if (!request.NoLimit && request.Limit <= 0)
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{
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throw new ValidationException("预算金额必须大于0");
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}
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if (request.SelectedCategories.Length == 0)
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{
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throw new ValidationException("请至少选择一个分类");
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}
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return Task.CompletedTask;
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}
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/// <summary>
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/// 验证更新请求
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/// </summary>
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private static Task ValidateUpdateRequestAsync(UpdateBudgetRequest request)
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{
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if (string.IsNullOrWhiteSpace(request.Name))
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{
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throw new ValidationException("预算名称不能为空");
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}
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if (!request.NoLimit && request.Limit <= 0)
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{
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throw new ValidationException("预算金额必须大于0");
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}
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if (request.SelectedCategories.Length == 0)
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{
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throw new ValidationException("请至少选择一个分类");
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}
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return Task.CompletedTask;
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}
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/// <summary>
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/// 验证预算分类（从Controller迁移的业务逻辑）
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/// </summary>
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private async Task ValidateBudgetCategoriesAsync(BudgetRecord record)
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{
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// 验证不记额预算必须是年度预算
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if (record.NoLimit && record.Type != BudgetPeriodType.Year)
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{
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throw new ValidationException("不记额预算只能设置为年度预算。");
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}
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var allBudgets = await budgetRepository.GetAllAsync();
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var recordSelectedCategories = record.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
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foreach (var budget in allBudgets)
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{
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var selectedCategories = budget.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
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if (budget.Id != record.Id)
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{
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if (budget.Category == record.Category &&
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recordSelectedCategories.Intersect(selectedCategories).Any())
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{
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throw new ValidationException($"和 {budget.Name} 存在分类冲突，请调整相关分类。");
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}
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}
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}
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}
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#endregion
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}
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